// Copyright 2025 The LUCI Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

const localStorageFake = (() => {
  let store = {} as Storage;

  return {
    getItem(key: string) {
      return store[key];
    },

    setItem(key: string, value: string) {
      store[key] = value;
    },

    removeItem(key: string) {
      delete store[key];
    },

    clear() {
      store = {} as Storage;
    },

    toString() {
      return JSON.stringify(store);
    },
  };
})();

export const fakeLocalStorage = () => {
  localStorageFake.clear();

  Object.defineProperty(window, 'localStorage', {
    value: localStorageFake,
  });

  return localStorageFake;
};
